Water gun



FIG. 1 is a front perspective view of a water gun;

FIG. 2 is a side elevational view thereof;

FIG. 3 is an opposite side view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is an enlarged front elevational view thereof; and,

FIG. 7 is an enlarged rear elevational view thereof. 

The ornamental design for a water gun, as shown and described. 